A method, system, device and medium for adjusting side wave wind cable of long-span arch bridge

Abstract

The present application relates to the technical field of long-span arch bridge, and particularly relates to a long-span arch bridge side wave wind cable adjusting method, system, equipment and medium, comprising the following steps: setting a cable force adjusting mechanism on each side wave wind cable base; connecting the corresponding side wave wind cable after hoisting the arch rib cantilever segment into place; pre-tightening the side wave wind cable by the cable force adjusting mechanism, loosening the arch rib cantilever segment at the lifting point after the cable force of the side wave wind cable reaches a first threshold value; collecting the axis and elevation of the arch rib cantilever segment in real time, feeding back to the cable force adjusting mechanism according to the difference between the axis and elevation and the design value, adjusting the cable force until the axis and elevation of the arch rib cantilever segment reach the design value. In the present application, on the one hand, manual chain hoists are not needed for back-and-forth cable force adjustment, and on the other hand, the hoisting time of the crane on the arch rib cantilever segment can be greatly reduced, the construction efficiency is improved, and the requirements for the construction environment and wind power during construction are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of long-span arch bridge technology, and in particular to a method, system, equipment, and medium for adjusting the side wave wind cables of a long-span arch bridge. Background Technology

[0002] The Wumeng Mountain Grand Bridge is the first large-span steel truss-concrete composite arch bridge. After its completion, the main span of the bridge will reach 270 meters. It is constructed using a towerless, transverse cable hoisting system. When constructing the bridge using the cable crane cantilever splicing method, the lower outer stiffness of the arch rib cantilever is relatively low, so it is necessary to install transverse side wave wind cables to improve wind resistance stability.

[0003] The placement, horizontal angle, and tension control of the side wave wind cables have a significant impact on the stability of the arch ring. There is no strict form for the placement of the side wave wind cables. When the terrain allows, they should be placed as symmetrically as possible to avoid asymmetrical cable tension. After determining their placement, their horizontal angle can be calculated. However, improper control of cable tension can affect the arch rib axis and elevation.

[0004] In existing technologies, the arch rib cantilever is usually lifted into place by a crane, and then the cable tension is adjusted manually by hand-operated hoists. The cable tension needs to be adjusted back and forth repeatedly until the arch rib axis and elevation meet the design requirements. Finally, the crane lifting points are loosened. The crane lifting time is long, and the requirements for the construction environment and wind force during construction are high. Moreover, the back and forth adjustment of cable tension has a great impact on the construction progress.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the general background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] This invention provides a method, system, equipment, and medium for adjusting the side wave wind cables of a long-span arch bridge, thereby effectively solving the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a method for adjusting the side wave wind cables of a long-span arch bridge, comprising the following steps:

[0008] A cable tension adjustment mechanism is installed on each side wave cable base;

[0009] After the arch rib cantilever segment is hoisted into place, it is connected to the corresponding side wave wind cable;

[0010] The cable tension adjustment mechanism pre-tightens the side wave wind cable, and after the cable tension of the side wave wind cable reaches the first threshold, the lifting point releases the cantilever segment of the arch rib.

[0011] The axis and elevation of the cantilever segment of the arch rib are collected in real time. Based on the difference between the axis and the design value, the difference is fed back to the cable force adjustment mechanism to adjust the cable force until the axis and elevation of the cantilever segment of the arch rib reach the design value.

[0012] Furthermore, the adjustment of the cable tension includes:

[0013] When the elevation of the cantilever segment of the arch rib deviates from the design value, the tension of the side wave wind cables on both sides is adjusted simultaneously to increase or decrease the tension on both sides synchronously.

[0014] When the axis of the cantilever segment of the arch rib deviates from the design value, first adjust the cable tension of the side wave wind cable on one side, then increase the cable tension of the side wave wind cable on the other side where the axis is deviated, and if:

[0015] If the tension of the side wave wind cable on the adjusted side reaches the second threshold, and the axis of the arch rib cantilever segment still has not reached the design value, then stop adjusting the tension of the side wave wind cable on that side, and reduce the tension of the side wave wind cable on the other side until the axis reaches the design value.

[0016] Furthermore, the first threshold is 90% of the pre-calculated cable force value of the wave-wind cable on that side;

[0017] The second threshold is 110% of the pre-calculated cable force value for that side wave wind cable.

[0018] Furthermore, when adjusting the cable tension:

[0019]

[0020]

[0021] Among them, f b (t) is the relationship function between the adjustment displacement of the cable force adjustment mechanism and time; A is the correspondence between the adjustment displacement of the cable force adjustment mechanism and the cable force value, t is time, K is the proportionality coefficient, and T is the time factor. i T is the integral coefficient. d is the differential coefficient, μ is the design value of the axis or elevation, B(t) is the relationship function between the axis or elevation and time, and C is the correspondence between the axis or elevation and the cable force value.

[0022] Furthermore, the real-time acquisition of the axis and elevation of the cantilever segment of the arch rib includes:

[0023] Two observation points are set on the side and front of the arch rib cantilever segment, respectively, and images of the arch rib cantilever segment are acquired at the two observation points.

[0024] The acquired images are preprocessed to extract features from the cantilever segments of the arch rib.

[0025] Calculate the values ​​of the axis and elevation in the image, and calculate the actual values ​​of the axis and elevation based on the distance between the observation point and the cantilever segment of the arch rib.

[0026] Furthermore, the extraction of features from the cantilever segment of the arch rib includes:

[0027] Set the region of interest in the acquired image and remove pixels outside the region of interest;

[0028] Within the region of interest, the side curve features or front axis features of the arch rib cantilever segment are extracted using a pre-trained feature extraction model.

[0029] Furthermore, the pre-training of the feature extraction model includes:

[0030] Define a sample set and assign labels to the sample set;

[0031] The sample set is divided into a training set and a validation set;

[0032] The parameters of the convolutional and pooling layers of the feature extraction model are set, and the feature extraction model is trained using the training set.

[0033] The feature extraction model is validated using the validation set, and the parameters of the convolutional and pooling layers are optimized.

[0034] The training and parameter optimization processes of the model are repeated until the accuracy of the feature extraction model reaches the required level.

[0035] This invention also includes a side wave wind cable adjustment system for long-span arch bridges, which uses the side wave wind cable adjustment method for long-span arch bridges as described above during operation, including:

[0036] A cable tension adjustment mechanism is installed on the base of the side wave wind cable to adjust the cable tension of the side wave wind cable;

[0037] The acquisition module is used to acquire the axis and elevation of the cantilever segment of the arch rib in real time;

[0038] The control module is used to control the corresponding cable tension adjustment mechanism to pre-tighten the cable tension of the side wave wind cable after the arch rib cantilever segment is hoisted into place and connected to the corresponding side wave wind cable, so that the cable tension of the side wave wind cable reaches the first threshold.

[0039] After the arch rib cantilever segment is released at the lifting point, the data collected by the acquisition module is obtained, and the difference between the axis and elevation and the design value is calculated. The cable force adjustment mechanism is controlled to adjust the cable force, and it is determined whether the axis and elevation of the arch rib cantilever segment have reached the design value.

[0040] The present invention also includes a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method as described above.

[0041] The present invention also includes a storage medium having a computer program stored thereon, which, when executed by a processor, implements the method as described above.

[0042] The beneficial effects of this invention are as follows: By setting a cable tension adjustment mechanism on each side wave cable base, after the arch rib cantilever segment is hoisted into place and connected to the corresponding side wave cable, the side wave cable is pre-tightened until its tension reaches a first threshold. At this point, the hoisting point can be released. Then, the axis and elevation of the arch rib cantilever segment are collected in real time. Based on the difference between these values ​​and the design values, the cable tension is fed back to the cable tension adjustment mechanism for adjustment until the axis and elevation of the arch rib cantilever segment reach the design values. On the one hand, manual cable tension adjustment using a hand-operated hoist is unnecessary; on the other hand, the hoisting time of the crane on the arch rib cantilever segment is significantly reduced, improving construction efficiency and greatly reducing the requirements for the construction environment and wind force during construction. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a flowchart of the method of the present invention;

[0045] Figure 2 This is a schematic diagram of the system of the present invention;

[0046] Figure 3 This is a schematic diagram of the structure of the device of the present invention. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0048] like Figure 1 As shown: A method for adjusting the side wave wind cables of a long-span arch bridge, comprising the following steps:

[0049] A cable tension adjustment mechanism is installed on each side wave cable base;

[0050] After the arch rib cantilever segment is hoisted into place, it is connected to the corresponding side wave wind cable;

[0051] The cable tension adjustment mechanism pre-tightens the side wave wind cable until the cable tension of the side wave wind cable reaches the first threshold, and then the lifting point releases the cantilever segment of the arch rib.

[0052] The axis and elevation of the cantilever segment of the arch rib are collected in real time. Based on the difference between the axis and the design value, the difference is fed back to the cable tension adjustment mechanism to adjust the cable tension until the axis and elevation of the cantilever segment of the arch rib reach the design value.

[0053] By installing a cable tension adjustment mechanism on each side wave cable base, after the arch rib cantilever segment is hoisted into place and connected to the corresponding side wave cable, the side wave cable is pre-tightened until its tension reaches the first threshold. At this point, the lifting point can be released. Then, the axis and elevation of the arch rib cantilever segment are collected in real time. Based on the difference between these values ​​and the design values, the cable tension is fed back to the cable tension adjustment mechanism to adjust the cable tension until the axis and elevation of the arch rib cantilever segment reach the design values. This eliminates the need for manual cable tension adjustment using a hand-operated hoist and significantly reduces the hoisting time of the crane on the arch rib cantilever segment, improving construction efficiency and greatly reducing the requirements for the construction environment and wind force during construction.

[0054] In this embodiment, adjusting the cable tension includes:

[0055] When the elevation of the cantilever segment of the arch rib deviates from the design value, the tension of the side wave wind cables on both sides is adjusted simultaneously to increase or decrease the tension on both sides synchronously.

[0056] When the axis of the cantilever segment of the arch rib deviates from the design value, first adjust the cable tension of the side wave wind cable on one side, then increase the cable tension of the side wave wind cable on the other side where the axis is deviated, and if:

[0057] If the tension of the side wave wind cable on the adjusted side reaches the second threshold, and the axis of the arch rib cantilever segment still has not reached the design value, then stop adjusting the tension of the side wave wind cable on that side, and reduce the tension of the side wave wind cable on the other side until the axis reaches the design value.

[0058] If the elevation of the cantilever segment of the arch rib deviates from the design value, and the elevation is higher than the design value, it indicates that the cable tension of the side wave wind cables on both sides is too small, and the cable tension of the side wave wind cables on both sides needs to be increased simultaneously. If the elevation is lower than the design value, it indicates that the cable tension of the side wave wind cables on both sides is too large, and the cable tension of the side wave wind cables on both sides needs to be decreased simultaneously.

[0059] If the axis of the cantilever segment of the arch rib deviates from the design value, the tension of the side wave wind cable on the opposite side of the axis deviation should be increased first to pull the arch rib towards the other end of the deviation, thus correcting the axis. However, if the tension is increased too much, the service life of the side wave wind cable on that side will be at risk. Therefore, the tension on this side cannot be increased indefinitely. Once the tension on this side reaches a certain value, the tension on the other side can be reduced to achieve the axis correction effect. The elevation and axis of the cantilever segment of the arch rib can be adjusted simultaneously through real-time feedback. However, since the adjustment processes of the axis and elevation are mutually influential, the calculation process is relatively cumbersome. Alternatively, the axis can be adjusted first, followed by the elevation. Since the axis adjustment process affects the elevation, the axis should be adjusted first, and then the elevation adjusted later. When adjusting the elevation, the tension on both sides increases or decreases simultaneously, with less impact on the axis, making the adjustment more convenient.

[0060] During pre-tensioning, the cable force is first brought to the first threshold, which is 90% of the pre-calculated cable force value of the side wave wind cable. At this time, the side wave wind cables on both sides can tension the cantilever segment of the arch rib, so the lifting point can be loosened and then subsequent precise adjustments can be made.

[0061] To prevent the cable tension on both sides of the side wave wind cable from differing too much, when adjusting the axis, if the cable tension on the adjusting side increases to the second threshold, in order to prevent the cable tension on this side from being too large and affecting the structural performance and service life of the side wave wind cable, the second threshold is set to 110% of the pre-calculated cable tension value of the side wave wind cable. If the axis still does not meet the design requirements at this time, the cable tension on the other side is reduced to correct the axis.

[0062] In this embodiment, when adjusting the cable tension:

[0063]

[0064]

[0065] Among them, f b (t) is the relationship function between the adjustment displacement of the cable force adjustment mechanism and time; A is the correspondence between the adjustment displacement of the cable force adjustment mechanism and the cable force value, t is time, K is the proportionality coefficient, and T is the time factor. i T is the integral coefficient. d is the differential coefficient, μ is the design value of the axis or elevation, B(t) is the relationship function between the axis or elevation and time, and C is the correspondence between the axis or elevation and the cable force value.

[0066] By establishing a relationship function between the adjustment displacement of the cable tension adjustment mechanism and time, and also establishing a relationship function between the axis or elevation and time during cable tension adjustment, real-time feedback can be provided on the adjustment process of the cable tension adjustment mechanism. This makes the cable tension adjustment more precise, reduces the fluctuation of the arch rib cantilever segment during cable tension adjustment, reduces cable tension adjustment time, and increases construction efficiency.

[0067] In this embodiment, the axis and elevation of the cantilever segment of the arch rib are acquired in real time, including:

[0068] Two observation points were set on the side and front of the arch rib cantilever segment, respectively, and images of the arch rib cantilever segment were acquired at the two observation points.

[0069] The acquired images are preprocessed to extract features from the cantilever segments of the arch rib.

[0070] Calculate the values ​​of the axis and elevation in the image. Based on the distance between the observation point and the cantilever segment of the arch rib, calculate the actual values ​​of the axis and elevation.

[0071] As a preferred embodiment of the above, the features of the arch rib cantilever segment are extracted, including:

[0072] Set the region of interest in the acquired image and remove pixels outside the region of interest;

[0073] Within the region of interest, the side curve features or front axis features of the arch rib cantilever segment are extracted using a pre-trained feature extraction model.

[0074] The pre-training of the feature extraction model includes:

[0075] Define a sample set and assign labels to the sample set;

[0076] The sample set is divided into a training set and a validation set;

[0077] Set the parameters of the convolutional and pooling layers of the feature extraction model, and train the feature extraction model to extract features using the training set;

[0078] The feature extraction model was validated using a validation set, and the parameters of the convolutional and pooling layers were optimized.

[0079] Repeat the training and parameter optimization process of the model until the accuracy of the feature extraction model reaches the required level.

[0080] Traditional methods of measuring axis and elevation require workers to use vertical instruments for fixed-point measurements, which cannot achieve real-time measurement and feedback adjustment. Therefore, image vision is used to measure and provide feedback on the axis and elevation of the arch rib cantilever segment in real time, improving the efficiency of cable force adjustment. A feature extraction model is pre-trained. After training, two observation points are set at the side and front of the arch bridge to capture images of the arch rib cantilever segment. A region of interest (ROI) is defined in the image, placing the arch rib cantilever segment under construction within the ROI to exclude the influence of other segments. Then, features are extracted using the model. For example, the front image extracts the axis features of the arch rib cantilever segment, while the side image extracts the curve features. After feature extraction, the axis and elevation on the image are calculated. The actual values ​​of the axis and elevation are then proportionally calculated using the distance between the observation point and the actual arch rib cantilever, thus achieving real-time feedback adjustment.

[0081] like Figure 2 As shown, this embodiment also includes a side wave wind cable adjustment system for long-span arch bridges, which uses the side wave wind cable adjustment method for long-span arch bridges as described above during operation, including:

[0082] The cable tension adjustment mechanism is located at the base of the side wave wind cable and adjusts the cable tension of the side wave wind cable.

[0083] The data acquisition module is used to acquire the axis and elevation of the cantilever segment of the arch rib in real time.

[0084] The control module is used to control the corresponding cable tension adjustment mechanism to pre-tighten the cable after the arch rib cantilever segment is hoisted into place and connected to the corresponding side wave wind cable, so that the cable tension of the side wave wind cable reaches the first threshold.

[0085] Furthermore, after the cantilever segment of the arch rib is released at the lifting point, the data collected by the acquisition module is obtained, and the difference between the axis and elevation and the design value is calculated. The cable force adjustment mechanism is controlled to adjust the cable force, and it is determined whether the axis and elevation of the cantilever segment of the arch rib have reached the design value.

[0086] By installing a cable tension adjustment mechanism on each side wave cable base, after the arch rib cantilever segment is hoisted into place and connected to the corresponding side wave cable, the side wave cable is pre-tightened until its tension reaches the first threshold. At this point, the lifting point can be released. Then, the axis and elevation of the arch rib cantilever segment are collected in real time. Based on the difference between these values ​​and the design values, the cable tension is fed back to the cable tension adjustment mechanism to adjust the cable tension until the axis and elevation of the arch rib cantilever segment reach the design values. This eliminates the need for manual cable tension adjustment using a hand-operated hoist and significantly reduces the hoisting time of the crane on the arch rib cantilever segment, improving construction efficiency and greatly reducing the requirements for the construction environment and wind force during construction.

[0087] Please see Figure 3 The diagram shows a structural schematic of a computer device provided in an embodiment of this application. An embodiment of this application provides a computer device 400, including a processor 410 and a memory 420. The memory 420 stores a computer program executable by the processor 410. When the computer program is executed by the processor 410, it performs the method described above.

[0088] This application embodiment also provides a storage medium 430, on which a computer program is stored, and the computer program is executed by a processor 410 to perform the above method.

[0089] The storage medium 430 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0090] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0091] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0093] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0094] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0095] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0096] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0097] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for adjusting the side wave wind cables of a long-span arch bridge, characterized in that, Includes the following steps: A cable tension adjustment mechanism is installed on each side wave cable base; After the arch rib cantilever segment is hoisted into place, it is connected to the corresponding side wave wind cable; The cable tension adjustment mechanism pre-tightens the side wave wind cable, and after the cable tension of the side wave wind cable reaches the first threshold, the lifting point releases the cantilever segment of the arch rib. The axis and elevation of the cantilever segment of the arch rib are collected in real time. The difference between the axis and elevation and the design value is fed back to the cable force adjustment mechanism to adjust the cable force until the axis and elevation of the cantilever segment of the arch rib reach the design value. Adjustments to the cable tension include: When the elevation of the cantilever segment of the arch rib deviates from the design value, the tension of the side wave wind cables on both sides is adjusted simultaneously to increase or decrease the tension on both sides synchronously. When the axis of the cantilever segment of the arch rib deviates from the design value, first adjust the cable tension of the side wave wind cable on one side, then increase the cable tension of the side wave wind cable on the other side where the axis is deviated, and if: If the tension of the side wave wind cable on the adjusted side reaches the second threshold and the axis of the arch rib cantilever segment still does not reach the design value, then stop adjusting the tension of the side wave wind cable on that side and reduce the tension of the side wave wind cable on the other side until the axis reaches the design value. The axis and elevation of the cantilever segment of the arch rib are collected in real time, including: Two observation points are set on the side and front of the arch rib cantilever segment, respectively, and images of the arch rib cantilever segment are acquired at the two observation points. The acquired images are preprocessed to extract features from the cantilever segments of the arch rib. Calculate the values ​​of the axis and elevation in the image, and calculate the actual values ​​of the axis and elevation based on the distance between the observation point and the cantilever segment of the arch rib; Features of the arch rib cantilever segment are extracted, including: Set the region of interest in the acquired image and remove pixels outside the region of interest; Within the region of interest, the side curve features or front axis features of the arch rib cantilever segment are extracted using a pre-trained feature extraction model. The feature extraction model pre-training includes: Define a sample set and assign labels to the sample set; The sample set is divided into a training set and a validation set; The parameters of the convolutional and pooling layers of the feature extraction model are set, and the feature extraction model is trained using the training set. The feature extraction model is validated using the validation set, and the parameters of the convolutional and pooling layers are optimized. The training and parameter optimization processes of the model are repeated until the accuracy of the feature extraction model reaches the required level.

2. The method for adjusting the side wave wind cables of a long-span arch bridge according to claim 1, characterized in that, The first threshold is 90% of the pre-calculated cable force value for that side of the wave-wind cable; The second threshold is 110% of the pre-calculated cable force value of the wave-wind cable on that side.

3. A wave-damping cable adjustment system for a long-span arch bridge, characterized in that, The method for adjusting the side wave wind cables of a long-span arch bridge as described in any one of claims 1 or 2, during operation, includes: A cable tension adjustment mechanism is installed on the base of the side wave wind cable to adjust the cable tension of the side wave wind cable; The acquisition module is used to acquire the axis and elevation of the cantilever segment of the arch rib in real time; The control module is used to control the corresponding cable tension adjustment mechanism to pre-tighten the cable tension of the side wave wind cable after the arch rib cantilever segment is hoisted into place and connected to the corresponding side wave wind cable, so that the cable tension of the side wave wind cable reaches the first threshold. After the arch rib cantilever segment is released at the lifting point, the data collected by the acquisition module is obtained, and the differences between the axis and the elevation and the design values ​​are calculated. The cable force adjustment mechanism is controlled to adjust the cable force, and it is determined whether the axis and elevation of the arch rib cantilever segment have reached the design values.

4. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method as described in any one of claims 1-2.

5. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1-2.

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